Does WhatsApp work internationally, and what does it cost abroad?

Why there is no international charge

An international SMS or a phone call to another country is expensive because it crosses between carrier networks, and carriers charge each other for the privilege. WhatsApp does not touch that system at all. Your message goes over the internet to WhatsApp's servers and out to the recipient, and the internet does not price by distance.

So the app has no concept of an international message. Sending to a number in Lagos and a number three streets away are identical operations consuming identical amounts of data. This is the single biggest reason WhatsApp took over in countries with large diasporas — it made international contact functionally free at a time when it very much was not.

Using it while you travel

Your account is tied to the number you registered, not to where you are. Fly anywhere and WhatsApp keeps working the moment the phone gets an internet connection. You keep the same chats, the same groups and the same number.

Do not re-register on a local SIM you bought for the trip. Registering a different number creates a different account and moves you off your own — you would lose access to your existing chats unless you migrate back. If you want to use a local SIM for cheap data, put it in the phone and leave WhatsApp registered to your home number. The app does not care which SIM is providing the connection.

The cost that actually bites: roaming data

WhatsApp is free. The connection is not. Inside a roaming zone where your allowance applies — most European plans across the EU, many US plans across Canada and Mexico — nothing changes. Outside one, data can be billed at rates that turn a long video call into a genuinely expensive mistake.

The full breakdown of what each activity consumes, and how to cut it, is in does WhatsApp work without Wi-Fi.

Countries where it does not work

A small number of governments block WhatsApp, either permanently or during specific periods. The list changes, and it changes without announcement, so treat any published list — including this one — as indicative rather than current.

• China blocks WhatsApp comprehensively. It has been unavailable there since 2017, and the app was removed from the Chinese App Store in 2024.
• North Korea permits no access to the ordinary internet for most residents, so the question does not arise.
• Several countries have imposed temporary blocks around elections or protests. Iran, Ethiopia and others have done so at various points.
• Some countries block WhatsApp voice and video calling specifically while allowing messaging. The United Arab Emirates has historically restricted VoIP calls of this kind.

Where calling specifically is blocked but messaging works, the symptom is a call that rings and immediately fails while chats send normally. That pattern, and the other reasons calls fail, is covered in why WhatsApp is not working.

Moving abroad permanently

If you are emigrating rather than travelling, you eventually face the question of what to do with the number. Two workable options, and one that goes badly.

1. 01Keep the old number alive on a cheap prepaid plan and carry on using it. Simplest, and costs a little each year.
2. 02Migrate to your new local number using WhatsApp's Change Number tool, which moves chats, groups and settings across and tells your contacts. Do this while you still control the old number.
3. 03Let the old number lapse and try to sort it out later. This is the one that fails: you cannot verify a number you no longer hold, and if the operator recycles it, whoever gets it can take the account.

The migration procedure and what it notifies is in how to change your WhatsApp number, and what is recoverable if you have already lost the old number is in using an old number without verification.